[455] Joyce, P. W., op. cit. I., pp. 560–563.
[456] Coffey, G., Guide to Antiquities of Christian Ireland. Illustration.
[457] Joyce, P. W., op. cit. I., p. 560.
[458] Joyce, P. W., op. cit. I., p. 567.
[459] MacAlister, R. A. S., Muiredach, Abbot of Monasterboice (890–923 A.D.). This work gives a detailed account of one of these crosses at Monasterboice.
[460] Abelson, Paul, The Seven Liberal Arts, p. 64.
[461] Text in Migne, Latin Patrology, Vol. 90, Col. 294–578.
[462] Text in Migne, Latin Patrology, Vol. 107, Col. 669–727.
[463] See Abelson, Paul, op. cit. p. 90.
[464] Abelson, Paul, op. cit. p. 100; Turner, Wm., Hist. of Phil., p. 257.